Thanks to this product, my hair is not firzzy anymore. I put a couple of drops to hair before flat iron or curly iron. It works best when hair's still half wet and leave this serum on to let your hair dry first.
I have been using it for about 3 yrs and one bottle last for a long time! I only used 2 bottles in last 3 yrs.
— 8 years, 7 months ago

I believe I am totally biased against Biolage. I do not like the smell or performance. This product did not perform well with my fine abundant hair. Too heavy of a product for starters. I have no idea why so many love Biolage. I also have a hard time removing the product when I shampoo.
— 8 years, 11 months ago